#!/usr/bin/python3.8.9
# -*- coding: utf-8 -*-

# @Author  : Tina Yu
# @Time    : 2021-7-21 21:58

def get_city_country(city, country, population=0):
    """获取城市-国家-人口数量"""
    city_country = f'{city} - {country}'
    if population:
        city_country += f' - {population}'
    return city_country
